Porsche's recalling 18,627 911s built between April 20th, 2004 and October 21st, 2005. The reason? A possibly faulty weld in the exhaust system that's affected thirty owners so far. Apparently, if left uninspected and unrepaired, it could lead to the back half of the system falling off. In the meantime, you might wanna refrain from tailgating any late-model neun-elfs.